A ruthenium film forming method includes: causing chlorine to be adsorbed to an upper portion of a recess at a higher density than to a lower portion of the recess by supplying a chlorine-containing gas to a substrate including an insulating film and having the recess; and forming a ruthenium film in the recess by supplying a Ru-containing precursor to the recess to which the chlorine is adsorbed.

A method of forming a ruthenium film on a surface of a substrate in order to embed ruthenium in a recess formed in the surface of the substrate includes depositing ruthenium by supplying a ruthenium raw material gas to the substrate under a preset first pressure, and depositing the ruthenium by supplying the ruthenium raw material gas to the substrate under a preset second pressure, which is lower than the first pressure. The ruthenium film is formed by alternately repeating the depositing the ruthenium under the first pressure and the depositing the ruthenium under the second pressure.

The present invention relates to a ruthenium thin film-forming method for forming a ruthenium thin film using a ruthenium precursor, in which tricarbonyl (η.sup.4-methylene-1,3-propanediyl) ruthenium ((CO).sub.3Ru-TMM)) having a structure represented by the following formula 1 is used as the ruthenium precursor, and the method includes a stage of forming a ruthenium thin film by an atomic layer deposition at a temperature ranging from 200° C. to 350° C. using this ruthenium precursor and a reaction gas. As the reaction gas, one or more selected from the group consisting of oxygen, hydrogen, water and ammonia are preferably applied.

##STR00001##

The present invention relates to a ruthenium thin film-forming method for forming a ruthenium thin film using a ruthenium precursor, in which tricarbonyl (η.sup.4-methylene-1,3-propanediyl) ruthenium ((CO).sub.3Ru-TMM)) having a structure represented by the following formula 1 is used as the ruthenium precursor, and the method includes a stage of forming a ruthenium thin film by an atomic layer deposition at a temperature ranging from 200° C. to 350° C. using this ruthenium precursor and a reaction gas. As the reaction gas, one or more selected from the group consisting of oxygen, hydrogen, water and ammonia are preferably applied.

##STR00001##

The present invention relates to a method for producing a high yield of an organometallic compound including a step of allowing a metal hexacarbonyl compound to react with a hexahydro-1,3,5-triazine compound, and a thin film having excellent properties, fabricated by depositing the produced organometallic compound.

The present invention relates to a raw material of an organoruthenium compound for producing a ruthenium thin film or a ruthenium compound thin film by a chemical deposition method. This organoruthenium compound is an organoruthenium compound represented by the following Formula 1 and including a trimethylenemethane-based ligand (L.sub.1) and three carbonyl ligands coordinated to divalent ruthenium. In Formula 1, the trimethylenemethane-based ligand L.sub.1 is represented by the following Formula 2:

##STR00001## wherein a substituent R of the ligand L.sub.1 is hydrogen, or any one of an alkyl group, a cyclic alkyl group, an alkenyl group, an alkynyl group, and an amino group having a predetermined number of carbon atoms.

A method of forming a ruthenium film on a substrate by supplying a ruthenium-containing gas includes: forming an adsorption inhibition layer that inhibits adsorption of the ruthenium-containing gas by supplying an adsorption inhibition gas to an end portion and a rear surface of the substrate; transferring the substrate to a chamber; and forming the ruthenium film on the substrate by supplying the ruthenium-containing gas to the chamber.

A method of forming a ruthenium film on a substrate by supplying a ruthenium-containing gas includes: forming an adsorption inhibition layer that inhibits adsorption of the ruthenium-containing gas by supplying an adsorption inhibition gas to an end portion and a rear surface of the substrate; transferring the substrate to a chamber; and forming the ruthenium film on the substrate by supplying the ruthenium-containing gas to the chamber.

A film-forming method of embedding ruthenium in a substrate having a recess includes: (a) providing the substrate in a processing container; (b) supplying a gas containing a ruthenium raw material gas into the processing container to form a ruthenium layer; (c) annealing the ruthenium layer; and (d) supplying a gas containing an ozone gas into the processing container to etch the ruthenium layer, wherein (b), (c), and (d) are repeatedly executed in this order.

A film-forming method of embedding ruthenium in a substrate having a recess includes: (a) providing the substrate in a processing container; (b) supplying a gas containing a ruthenium raw material gas into the processing container to form a ruthenium layer; (c) annealing the ruthenium layer; and (d) supplying a gas containing an ozone gas into the processing container to etch the ruthenium layer, wherein (b), (c), and (d) are repeatedly executed in this order.